RiverFish

European eel · Anguilla anguilla

European eel in the River Cocker

Largest measured european eel: 69 cm

The largest european eel measured in Environment Agency surveys of the River Cocker was 69 cm, recorded at 1609.80 High Rogerscale, River Cocker on 23 July 2013.

Across 445 measured european eel, the median measured length was 17.5 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Cocker.

See european eel records across England →

Most recent observation7 August 20231656.00 Tom Rudd Beck, River Cocker · 1 fish
Largest measured european eel
69 cm
Median length
17.5 cm
Fish measured
445
Survey locations
19

Individual EA measurements

Largest measured european eel

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
69 cm23 Jul 20131609.80 High Rogerscale, River Cocker137410
61 cm2 Sept 20101605.00 DS Crummock Water, R Cocker124741
55 cm10 Jul 20231601.00 Honister Pass, Gaitsgarthdale Beck162554
50 cm3 Sept 20101609.12 DS Lorton Road Bridge, River Cocker124771
45 cm10 Jul 20231601.00 Honister Pass, Gaitsgarthdale Beck162554
45 cm22 Jul 20131605.00 DS Crummock Water, R Cocker137408
42.5 cm23 Jul 20131609.12 DS Lorton Road Bridge, River Cocker137413
42.5 cm23 Jul 20131609.12 DS Lorton Road Bridge, River Cocker137413
42.5 cm17 Jul 20061601.00 Honister Pass, Gaitsgarthdale Beck103037
42.5 cm3 Sept 20031609.10 DS Lorton road bridge, R Cocker78331

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where european eel were found

Each point marks a survey location with at least one european eel record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyedFirst recordedLast recordedVisits finding european eel
1656.00 Tom Rudd Beck, River Cocker6 Jul 20177 Aug 20232
1601.00 Honister Pass, Gaitsgarthdale Beck17 Jul 200610 Jul 20235
1666.00 Broughton Beck, River Derwent26 Jul 20047 Jul 20234
1659.53 Bitter Beck, River Cocker21 Jul 20066 Jul 20173
1619.40 Sail Beck, River Cocker18 Jul 20065 Sept 20132
1603.00 DS Buttermere, Buttermere Dubs5 Sept 20135 Sept 20131
1615.50 DS Jubille Bridge d/s Footbridge24 Jul 201324 Jul 20131
1611.10 Low Stanger Farm, River Cocker10 Sept 200324 Jul 20135
1612.00 DS Southwaite Road Bridge, R Cocker12 Sept 200123 Jul 20134
1609.80 High Rogerscale, River Cocker10 Sept 200323 Jul 20135
1609.48 Nr Sewage Works, River Cocker29 Sept 200923 Jul 20133
1609.12 DS Lorton Road Bridge, River Cocker3 Sept 201023 Jul 20132
1607.00 Redhow, River Cocker8 Sept 200323 Jul 20135
1606.50 Cornhow, River Cocker8 Sept 200322 Jul 20134
1605.90 DS from weir at Scales car park, R Cocker11 Sept 200122 Jul 20134
1605.00 DS Crummock Water, R Cocker11 Sept 200122 Jul 20135
1615.00 DS of Jubilee Bridge, River Cocker25 Sept 20013 Sept 20105
1609.10 DS Lorton road bridge, R Cocker11 Sept 200119 Aug 20053
1609.50 Nr Sewage Treatment Works, R. Cocker18 Sept 200318 Sept 20031

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

2001–2023

Survey records by year

Each bar shows how many survey visits recorded european eel that year.

Fish measured by surveyors

Measured length distribution

See how the 445 measured fish were spread across different length ranges.

Smallest
7.5 cm
Lower quarter
13 cm
Median
17.5 cm
Upper quarter
25 cm
Largest
69 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Cocker

Compare other species with enough survey and measurement data for a detailed page.

Brown / sea trout Atlantic salmon

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →